Göbekli Tepe in southeastern Turkey contains T-shaped limestone megaliths, some exceeding 16 feet (5 metres) in height.
Notes on verification
Confirmed by UNESCO, German Archaeological Institute, and History.com, all citing pillar heights up to 5.5 meters (18 feet), consistent with and exceeding the claim's stated threshold.
Sources
- Gobekli Tepe | Neolithic, Prehistoric, Monument, & Map (britannica.com)
- https://whc.unesco.org/en/list/1572 (whc.unesco.org)
- https://www.history.com/articles/gobekli-tepe (history.com)
- https://www.dainst.blog/the-tepe-telegrams/tag/t-pillars/ (dainst.blog)